Ribeiro, Paulo Roberto, Rodolfo Nascimento Kronka, Maria Cristina Thomaz, Melissa Izabel Hannas, Fernanda Marcussi Tucci, Antônio João Scandolera, and Fábio Enrique Lemos Budiño. 2011. “Different Levels of Betaine on Diarrhea Incidence, Performance, Carcass Characteristics and Blood Parameters of Pigs”. Brazilian Journal of Veterinary Research and Animal Science 48 (4): 299-306. https://doi.org/10.11606/S1413-95962011000400004.